1. a structure or object that impedes free movement
2. any condition that makes it difficult to make progress or to achieve an objective; "intolerance is a barrier to understanding"
3. anything serving to maintain separation by obstructing vision or access

Similar Words: roadblock

Hyponyms: bannister, banister, balustrade, balusters, handrail, barricade, breakwater, groin, groyne, mole, bulwark, seawall, jetty, bulwarks, crash barrier, dam, dyke, levee, fence, fencing, fender, wing, grate, grating, hurdle, movable barrier, railing, rail, revetment, roadblock, starting gate, starting stalls, ideological barrier, language barrier, bar, blood-brain barrier, curtain